Moderate

Which one of the following is true about the reaction; Zn + Cu²⁺ → Zn²⁺ + Cu?

Correct answer: A. Cu can oxidize Zn

  • A. Cu can oxidize Zn
  • B. Cu can not oxidize Zn
  • C. Reaction is nonspontaneous
  • D. Zn can oxidize Cu

Explanation

From the reaction, we can observe that the oxidation state of Zn increases, meaning Zn is oxidized. Similarly, Cu is reduced as its oxidation state decreases. The reaction is spontaneous because Zn has a higher oxidation potential than Cu. Out of the given options, the only correct statement is that Cu can oxidize Zn.

Last updated

About Electrochemistry

Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.

Practise Electrochemistry

696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions